Product Description
PPG PR-1770 is a high strength, two-part, manganese dioxide-cured Permapol P-5 polysulfide fuel tank sealant engineered for fillet sealing and fuselage sealing in aerospace applications. It offers excellent adhesion, flexibility, and chemical resistance to jet fuel, aviation gas, and hydraulic fluids across a -55°C to +180°C service temperature range, with elongation >400% and tensile strength of 522 psi.
Specifications
Material & Construction
| Base Polymer | Permapol P-5 polysulfide |
Part Numbers
| OEM Part Number | PR-1770 (PPG brand proprietary identifier) |
Frequently Asked Questions
Q: What is PPG PR-1770 sealant?
A: PR-1770 is a two-part, high-strength polysulfide-based fuel tank sealant manufactured by PPG using their proprietary Permapol P-5 polymer base. It is manganese dioxide-cured and engineered specifically for aerospace fillet sealing and fuselage applications. This product is not designed for material handling equipment.
Q: What are the material specifications of PR-1770?
A: PR-1770 base polymer is Permapol P-5 polysulfide. The material offers elongation exceeding 400 percent and tensile strength of 522 psi. It features manganese dioxide as the curing agent and is formulated to bond effectively to aluminum, steel, and composite substrates without additional primer systems.
Q: What is the service temperature range for PR-1770?
A: PR-1770 maintains performance across -55 degrees Celsius to +180 degrees Celsius, making it suitable for aircraft operations spanning extreme altitudes and climb rates. The sealant retains flexibility and structural integrity throughout this full range without brittleness or degradation.
Q: What fluids is PR-1770 resistant to?
A: PR-1770 demonstrates excellent chemical resistance to jet fuel, aviation gasoline, and hydraulic fluids commonly used in aircraft systems. The polysulfide chemistry resists swelling, softening, or chemical attack from these fluids over extended exposure periods, maintaining seal integrity throughout the aircraft service life.